Math games and fun stuff

Here are some cool math places:
http://www.k111.k12.il.us/king/math.htm
http://funschool.kaboose.com/arcade/math/index.html
http://www.funbrain.com/math/
http://www.oswego.org/ocsd-web/games/SumSense/summulti.html
http://www.mathgym.com.au/htdocs/logarc.htm
(Parents, please supervise children online if you are concerned about where they surf)

http://www.mathplayground.com/ This is a great one I just found, good for less and more advanced students!